The Weekend in Black and White

This is a mosaic plant—it's a Zone 10
pond plant, i.e., tropical.  Brooklyn's not exactly
in the tropics (though on humid summer days 
it may feel like it is), and that's where I
found this one growing.  It won't winter over,
so I guess they'll have to plant another one next year.

[To see more monochromes, visit Dragonstar's meme.]